1650642450 has 48 divisors (see below), whose sum is σ = 4113073056. Its totient is φ = 438076800.

The previous prime is 1650642439. The next prime is 1650642463. The reversal of 1650642450 is 542460561.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5574 + ... + 57726.

It is an arithmetic number, because the mean of its divisors is an integer number (85689022).

Almost surely, 2^1650642450 is an apocalyptic number.

1650642450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1650642450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2056536528).

1650642450 is an abundant number, since it is smaller than the sum of its proper divisors (2462430606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1650642450 is a wasteful number, since it uses less digits than its factorization.

1650642450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52379 (or 52374 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 1650642450 is about 40628.0992663944. The cubic root of 1650642450 is about 1181.8190964580.

The spelling of 1650642450 in words is "one billion, six hundred fifty million, six hundred forty-two thousand, four hundred fifty".